本文關鍵詞：城市道路粉塵、土壤及行道樹的重金屬污染特征，由筆耕文化傳播整理發(fā)布。

城市道路粉塵、土壤及行道樹的重金屬污染特征

第 41卷第 i期

西南交通大學學報

2∞6年 2月

JOURNAL OF SOUTHWEST JIAOTONG UNIVERSITY

Vo1. 41 No.l Feb. 2006

文'能編號: 0258-2724 ( 2∞的Ol'()(削心6

城市道路粉塵、土壤及行道樹的蠢金屬污染特征 張建強白石清 2渡邊泉2 (1.四商交通大學環(huán)境科學與工程學院，四川成都 61∞31; 2.日本東京農工大學農學部，日本東京 183幡85(9)摘要:為了撒輕汽車有駛導致的城市道路重金屬污染，采用污染指數(shù)法分析飛評價東京城市道路粉塵、特道樹

表層土壤的童金屬污染特征，掌握道路受蠢金屬將染的狀況，探討行遭樹樹葉對重金庸的擒獲能力及樹種間的 差異.結果表嚼，東京市區(qū)道路粉塵的重金屬濃攘攘交通量能增如商上升，且與道路土壤相比，道路粉塵始重金

屬濃E距離.以 Pb為代表的汽車污混在東京有減輕的趨勢，但是仍然較高，說明 Pb將染長期存在;而且，因尾氣凈化系統(tǒng)中使用叭，從而引坦 Pt持染.行道樹樹葉的重金屬濃度比對照點同樹種的濃度高，不同樹種濃度差異幢 大，校鵲花蓄積重金庸的能力強 E因此，栽植蓄朝重金屬能力強的樹種，可以在一定程度上控制麓金屬污染的 擴散，

關鍵詢:重金屬污染;道路;粉塵;土壤:行道樹 I:þ\ll分類號:X132;

X502

文獻棟詼碼:A

Heavy Metal Pollution of Dust, Topsoil and Roadside Tree Near by Main City Roadways SHIRAlSHI Sayaka l WATANABE lzumil (1. School of Envìronmenta1 Seience and Eng., Southwest Jiaotong University. Chengdu 61∞131, China; 2. culture and T恍如ology Tokyo University. Tokyo 183 -8509蘿 Japan)

ZIIANG Jian-qiang l,

Agri-

Abstract: To effectively control heavy metal pollution of city roadways induced by motor窯. the pollution index method was adopted to analyze and evaluate the characteristics of he在，vy me時嚴如運on of roadway dust and topsoil ncar by roadside tre錮，， and gr現(xiàn)sp the status of heavy metal pollution of city roadways. The capability for the leaves of且 roadside tree to capture heavy metals and the diversity of the capabilities of different trees were discussed.節(jié)1e results show that the heavy metal concentration of roadway dust in downtown Tokyo increases with the traff妃. and it is higher in dust than in top崎il. There is the trend, i. e., Pb pollution, rep陀senting car pollution. declines in Tokyo. but its concentration is higher and Pb pollution will exist for a long time. Moreover. pt pollution has been brought about due to the use of Pt in the exhaust-puI遠ed system of motor vehicles.白le heavy metal concentralÍon is always higher in the leaves of roadside加es than in those of homologous trees in a contrast spot, and there is a great difference in出e heavy concentration of inhomogeneous trees and

Rhododendron oomura.tak can accumulate more heavy metal. As a result. to plant trees that accumulate more heavy

metals can restraÎn出e di在usion of heavy metal poll四on of city roadways. Key words: heavy mctal poHutÎon; roadway; dust; topsoil; roadside tree

c礎

1被稿臼揭露:2∞4.\0帽，21

a金項鼠:教育背11M學時國人員科研啟動必金資助項目 (2∞'2247) f苦餐籬介:張主富強(1 963 - ).勇戰(zhàn)役，溥士，博士~導師，研究方向為生態(tài)董事槐保護.電話:028-87敘梢眩，也maìl南京哩icn@撓。IDe.時tu.

edu. cn

  本文關鍵詞：城市道路粉塵、土壤及行道樹的重金屬污染特征，由筆耕文化傳播整理發(fā)布。